Rspec case for rails 4 patch :update - ruby-on-rails

Question

I am using Devise in my app, and trying to write a spec for updating email ID. The UI works, but the spec is failing. I am reloading the user object as well, before testing against changed email ID.
One thing that I do observe is that there is UPDATE USERS statement being run on the database.
What is the correct way to write the spec?
RSpec spec:
it "should update email" do
#user = subject.current_user
patch :update, id: #user, user: {:email => "john.doe#example1.com"}
#user.reload
expect(#user.email).to eq("john.doe#example1.com")
end
RSpec Error Log:
1) Users::RegistrationsController logged in user should update email
Failure/Error: expect(#user.email).to eq("john.doe#example1.com")
expected: "john.doe#example1.com"
got: "john.doe#example.com"
(compared using ==)
test.log:
ActiveRecord::SchemaMigration Load (0.4ms) SELECT "schema_migrations".* FROM "schema_migrations"
(0.2ms) BEGIN
(0.4ms) SAVEPOINT active_record_1
User Exists (0.9ms) SELECT 1 AS one FROM "users" WHERE "users"."email" = 'john.doe#example.com' LIMIT 1
SQL (4.1ms) INSERT INTO "users" ("created_at", "email", "encrypted_password", "first_name", "last_name", "updated_at") VALUES ($1, $2, $3, $4, $5, $6) RETURNING "id" [["created_at", Sat, 22 Jun 2013 13:12:28 UTC +00:00], ["email", "john.doe#example.com"], ["encrypted_password", "$2a$04$LIRWzphxstpCLTuZjicA..YMW.Ei2V/LlYWP32gfx39nBjhFg5tLe"], ["first_name", "John"], ["last_name", "Doe"], ["updated_at", Sat, 22 Jun 2013 13:12:28 UTC +00:00]]
(0.1ms) RELEASE SAVEPOINT active_record_1
User Load (0.6ms) SELECT "users".* FROM "users" WHERE "users"."id" = 457 ORDER BY "users"."id" ASC LIMIT 1
Processing by Users::RegistrationsController#update as HTML
Parameters: {"id"=>"457", "user"=>{"email"=>"john.doe#example1.com"}}
User Load (0.6ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 LIMIT 1 [["id", 457]]
User Exists (0.4ms) SELECT 1 AS one FROM "users" WHERE ("users"."email" = 'john.doe#example1.com' AND "users"."id" != 457) LIMIT 1
Rendered devise/registrations/edit.html.slim within layouts/application (0.2ms)
Completed 200 OK in 73ms (Views: 4.0ms | ActiveRecord: 1.0ms)
User Load (0.4ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 LIMIT 1 [["id", 457]]
(0.2ms) ROLLBACK

Answer 1

Try
it "should update email" do
#user = subject.current_user
patch :update, id: #user, user: {:email => "john.doe#example1.com"}
#user.reload.email.should == "john.doe#example1.com"
end
Or alternatively
it "should update email" do
#user = subject.current_user
expect {
patch :update, id: #user, user: {:email => "john.doe#example1.com"}
#user.reload
}.to change(#user, :email).to("john.doe#example1.com")
end